Data from "The Sligo, Leitrim, and Northern Counties Ry," The Locomotive Magazine, Vol VIII (9 May 1903), pp. 335. Works numbers were 1197-1198.
This was the first pair of new locomotives for the S L & NC, which opened its first section in 1879. The wheel arrangement attracted some comment by the LM's author. A photo shows that the trailling axle was both a good distance behind the last coupled axle (to support the firebox) and held wheels that seemed almost the same diameter as the drivers. Also, the connecting rod was quite long because it drove on the 3 coupled axle, a rare layout.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Pioneer |
| Locobase ID | 10318 |
| Railroad | Sligo, Leitrim & Northern Counties |
| Country | Ireland |
| Whyte | 0-6-2T |
| Number in Class | 2 |
| Road Numbers | |
| Gauge | 5'3" |
| Number Built | 2 |
| Builder | Avonside |
| Year | 1877 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8.75 / 2.67 |
| Engine Wheelbase (ft / m) | 15.67 / 4.78 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.56 |
| Overall Wheelbase (engine & tender) (ft / m) | 15.67 / 4.78 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 82,880 / 37,594 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 82,880 / 37,594 |
| Tender Water Capacity (gals / ML) | 1440 / 5.45 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.80 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 46 / 1168 |
| Boiler Pressure (psi / kPa) | 130 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 22" / 406x559 |
| Tractive Effort (lbs / kg) | 13,529 / 6136.66 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 150 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | |
| Evaporative Heating Surface (sq ft / m2) | |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | |
| Evaporative Heating Surface/Cylinder Volume | |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | |
| Same as above plus superheater percentage | |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |